; Exercise 1.2: Translate the following expression into prefix form
; 
;     5 + 4 + (2 - (3 - (6 + 4/5)))
;     -----------------------------
;            3(6 - 2)(2 - 7)
; 
(/ (+ 5  4  (- 2 (- 3 (+ 6 (/ 4 5)))))
   (* 3 (- 6 2) (- 2 7)))
